Charlotte.rb - "Comics" Is Hard

“Comics” Is Hard: On Domains and Databases Ben Sco eld – Viget Labs

domains

biology

Kingdom Animalia Phylum Chordata Class Mammalia Order Carnivora Family Felidae Genus Panthera Species tigris ickr: pandiyan

Animalia Chordata Mammalia Carnivora Felidae Panthera tigris ickr: pandiyan

kingdoms phyla classes orders families genera species

Problem The levels are imaginary

kingdoms subphyla phyla superclasses subclasses classes superorders suborders orders superfamilies subfamilies families subgenera genera subspecies species varieties

kingdoms subphyla phyla superclasses subclasses ? classes superorders suborders orders superfamilies subfamilies families subgenera genera subspecies species varieties

taxa subspecies species varieties

Species ickr: cpurrin1

Reproductive Isolation ickr: superciliousness

ickr: chiotsrun

ickr: niznoz

Numerical taxonomy

Cladistics

clades organisms

Problem Cladistics is historical and counter-intuitive

ickr: goellnitz

ickr: goellnitz pcoin

The Challenge Unclear, imprecise domain

comics

publishers titles issues

publishers imprints titles issues

publishers imprints titles volumes issues

publishers imprints titles volumes trades issues reprints

publishers imprints titles volumes trades issues reprints variants

publishers imprints titles names volumes trades issues reprints variants

publishers imprints ? titles names volumes trades issues reprints nested set? variants

publishers imprints ?!?! titles names volumes trades issues reprints nested set? variants

science ﬁction noir horror genres? independent Martial Arts historical superhero Pirate

publishers imprints #&*! titles names volumes trades genres issues reprints nested set? variants

The Challenge Complete insanity

nosql altdb postrelational lesssql

http://thisisindexed.com/2009/02/just-because-you-can-doesnt-mean-you-should/

key-value stores

dynomite tokyo cabinet project voldemort pstore redis

require "rubygems" require "tokyocabinet" include TokyoCabinet bdb = BDB::new # B-Tree database; keys may have multiple values bdb.open("casket.bdb", BDB::OWRITER | BDB::OCREAT) # store records in the database, allowing duplicates bdb.putdup("key1", "value1") bdb.putdup("key1", "value2") bdb.put("key2", "value3") bdb.put("key3", "value4") # retrieve all values p bdb.getlist("key1") # => ["value1", "value2"] # range query, ﬁnd all matching keys p bdb.range("key1", true, "key3", true) # => ["key1", "key2", "key3"] http://www.igvita.com/2009/02/13/tokyo-cabinet-beyond-key-value-store/

Biology x Comics x

Conﬁguration ✓ Caching ✓ Translations ✓

document databases

couchdb jackrabbit mongodb rddb riak

{ 'name':'Ben Scoﬁeld', 'twitter':'@bscoﬁeld' } { 'name':'Jim Van Fleet', 'adjective':'awesomesauce' }

class Question include MongoMapper::Document key :number, Integer, :required => true key :text, String, :required => true many :choices end class Choice include MongoMapper::EmbeddedDocument key :text, String, :required => true end

Biology ✓ Comics x

{ ‘kingdom’:‘Animalia’, ‘phylum’:‘Chordata’, ‘subphylum’:‘Vertebrata’, ‘class’:‘Mammalia’, ‘subclass’:‘Eutheria’, ‘order’:‘Carnivora’, ‘family’:‘Felidae’, ‘subfamily’:‘Panthernae’, ‘genus’:‘Pantera’, ‘species’:‘tigris’, ‘name’:‘Wanda’ }

{ ‘kingdom’:‘Animalia’, ‘subkingdom’:‘Eumetazoa’, ‘phylum’:‘Chordata’, ‘subphylum’:‘Vertebrata’, ‘class’:‘Mammalia’, ‘subclass’:‘Theria’, ‘order’:‘Carnivora’, ‘suborder’: ‘Caniformia’, ‘family’:‘Canidae’, ‘subfamily’:‘Caninae’, ‘tribe’:‘Canini’, ‘genus’:‘Canis’, ‘species’:‘lupus’, ‘subspecies’:‘familiaris’, ‘name’:‘Daisy’ }

graph databases

allegograph hypergraphdb neo4j activeRDF

http://neotechnology.com/why-neo

http://markorodriguez.com/Lectures_ les/risk-symposium2009.pdf

ickr: 9948354@N08

Biology ✓ Comics ✓

Animalia ... Felidae subfamilyof genusof Panthernae genusof Panthera speciesof tigris member 001 age name weight 3 Wanda 300

Animalia ... Felidae subfamilyof genusof Panthernae genusof Panthera species speciesof type tigris 010 name tigris member 001 age name weight 3 Wanda 300

Group IV orderof Picornavirales familyof Picornaviridae genusof Rhinovirus speciesof human rhinovirus A member 002

class Mammalia Group IV group orderof orderof Carnivora Picornavirales familyof familyof Felidae Picornaviridae subfamilyof Panthernae genusof genusof genusof Panthera Rhinovirus speciesof speciesof human tigris rhinovirus A member member 001 002

DC imprintof titleof DC Universe Green titleof 001 Lantern nameof genreof volumeof genreof Volume 1 Sci Fi Superhero genreof issueof genreof 002 precedes Issue #2 number coverof #1 003

require 'neo4j' Neo4j::Transaction.run do dc = Neo4j::Node.new dc[:name] = 'DC' dc_universe = Neo4j::Node.new dc_universe[:name] = 'DC Universe' dc.relationships.outgoing(:imprints) << dc_universe rel = dc.relationships.outgoing(:imprints).ﬁrst rel[:started] = 1980 vol1 = Neo4j::Node.new vol1[:started] = 1941 vol1[:ended] = 1949 vol1[:name] = 'Green Lantern' dc.relationships.outgoing(:titles) << vol1 dc_universe.relationships.outgoing(:titles) << vol1 # ... end

other alternatives

column-oriented constant in-memory streaming temporal

selection

None Key-Value Many-One Document-Oriented Many-Many Relational Many-Many ++ Graph

polyglot persistence

{ ‘title’:‘I Love Cheese’ ‘content’:‘Cheese is...’ ‘posted’:’24 Sept 2009’ ‘comments’:[{ ‘author’:‘Joe Schmoe’ ‘posted’:’24 Sept 2009’ ‘content’:‘First!’ }, {...}] }

Tag Tag Post General Life 1ec8264 Work Food 1ec8264 Fitness Writing bae294a Life Food Writing { ‘title’:‘I Love Cheese’ Family ‘content’:‘Cheese is...’ ‘posted’:’24 Sept 2009’ ‘comments’:[{ ‘author’:‘Joe Schmoe’ ‘posted’:’24 Sept 2009’ ‘content’:‘First!’ }, {...}] }

HTTP application application

HTTP application

application

Thank You ben sco eld - @bsco eld http://bensco eld.com http://www.viget.com/extend http://www.speakerrate.com/bsco eld

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Charlotte.rb - "Comics" Is Hard

by Ben Scofield on Oct 15, 2009

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